Hoisting-machine



(No Model.) 2 Sheets-Sheet 1'.

J. GGSGROVE.

HOISTING MACHINE.

Patented Mar. 29, 1892.

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A TTOHNE YS 2 Sheets-Sheet 2.

' (No Model.)

- J. G-OSGROVR.

HOISTING MACHINE.

No. 471,955. Patented Mar. 29, 1892.

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JOHN COSGROVE, OF ROANOKE, VIRGINIA.

HOlSTlNG-IVIACHIN.

SPECIFICATION forming part of Letters Patent No. 471,955, dated March29, 1892.

Application filed August 14, 1891.

To all whom it may concern.-

Be it known that I, JOHN COSGROVE, residing at Roanoke, in the county ofRoanoke and State of Virginia, have invented certain new and usefulImprovements in Hoisting-Machines, of which the following' is aspecification.

Myinvention relates more especially to that class of hoisting-machinesused in the construction of buildings for elevating the material to theworkmen; and it has for its object to provide a machine of thischaracter which will combine the elements of simplicity, strength,cheapness, and effectiveness.

My invention consists in the peculiar combination and novel arrangementof parts, all of which will hereinafter be fully described in theannexed specification and particularly pointed out in the claims,reference being had to the accompanying drawings, in whicl1- Figure l isa perspective view of my improved machine. Fig. 2 is a top plan View ofthe same. Fig. 3 is a perspective view of a modified arrangement of myimproved machine, and Fig. 4 is a detail perspective view hereinafterreferred to.

Referring to the accompanying drawings, A A indicate a wooden frame madeof light timber, such as four inches by four inches, and which, when ofthe construction shown in Figs. 1 and 2, is made the width of thebuilding and about as high as it is wide, the frame being held andbraced by the stay-bolts B B, as shown.

C indicates a mast, which is journaled at its upper end in a plate D,which is detachably secured to the under face of the upper cross-beam aby means of the bolts d. Such plate, which is clearly illustrated inFig. 4, has a forwardly-projecting member d', apertured at d2 to receivethe upper gudgeon c of the mast, and with upwardly-projecting aperturedears d3 at its rear end, in which is pivoted a goose-neck member E,which is bifurcated as at c, and is secured to the upper end of adiagonal brace-beam F, fastened at its lower end to a horizontalbrace-beam G, projected rearwardly from the lower brace-beam o. anddetachably connected to such beam by means of the plate H, which isdetachably secured to the upper face 0f the beam a', and

Serial No. 402,686. (No model.)

is projected to the front and rear, as shown,

its front end being apertured to form the bearing for the lower gudgeonc of the mast, while its rear end is apertured to receive the connectingpin or boltf.

I indicates a boom secured to and projected at right angles from themast at a point about two thirds the height thereof, such boomconsisting of the diverging members I', the front ends of which are heldapart by a crosspiece I2, brace-rods I3 I3, which connect said frontends of the members I', being employed to strengthen and support thesaid boom.

It will be noticed by reference to Fig. 1 that arranging the mast to oneside of the main frame permits of a longer boom being used than could beused if it were disposed in the center of the frame. Itmay, however, beplaced in the center of the frame when necessary. By detachablyconnecting the mast to the main frame in the manner before described andshown it can be readily changed from one side of the frame to the other,Whereby to adapt the boom to work toward lthe scaffold on either side ofthe building.

J indicates stay-lines,which are secured to the back brace F and to thecorner-posts of `the frame A, which lead to anchor-frames K,

located and held fast in the cellar or ground floor of the building, andin such frames K are j ournaled windlasses lc, on which the stayropesare wound when not in' use or when the building is low and unwound asthe building goes up and the frame A is raised from loorv to iioor. Thismanner of bracing the frame is very effective when it is desired to liftvery'- heavy material, as additional weight can be applied to the rearbrace-beams without applying any weight on the building proper. When themast is shifted from one side to the other, the rope J is detached fromthe rear braces and the frame K is anchored at the other side of thebuilding in line with the mast.

L indicates the hoisting rope, which is formed into loops L L', to whichare Vconnected the rope-slings L2 L?, to which are connectedcover-plates M M, which serve to close over the wheelbarrows NN, whentheyare attached to the slings, in a manner clearly shown in Fig. l. Itwill be observed that the loops IOO L L and the hoist-rope are soarranged that as one barrow is elevated the other is lowered, the saidhoisting-rope passing over sheaves 10 and 2O on the outer end of thevboom and guide-sheaves 30 and 40 on the mast, and thence to thehoisting-power, which may be horse, steam, or any other power available.By widening the front end of the boom and arranging the supporting andguide sheaves as shown the barrows will be held apart and kept fromknocking against each other during the operation of lifting them.

P P indicate the tag or pull ropes, which are attached to the outer endsof the boom and passed over guide-sheaves Q Q, arranged on the mainframe, as shown, and extended to within convenient reach of the helper,who by pulling on either rope can guide the boom to that part of thescaffold desired.

R indicates the scaffold, which in practice is made wide enough topermit of the barrows being wheeled along to any part thereof withoutinterfering with the masons at work.

From the foregoing description in connection with the drawings, themanner in which my improved hoisting-machine operates will be clearlyunderstood. Aarrangng the gooseneck connection in the manner shownallows the back-brace to set to any angle desired without its beingreheated and bent, as is usually done with the old style of goose-neck.

lVhen it is desired to use myimprovements in connection with buildingsof a great width, Where the construction thereot` in the manner shown inFigs. l and 2 would be objectionable owing to the same becoming toobulky to handle conveniently, I construct and arrange the hoist in themanner clearly shown in Fig. 3, by reference to which it will be seenthat the frame consists of the divergin g base-frame A5, the divergingupwardly-inclined braces B5, the lower ends of which are connected tothe base A5, while their upper ends have gooseneck members E5, which arepivoted between ears d5 d5 of a spideror top plate D5,in which isjournaled the upper gudgeon of the mast, the lower end of which isjournaled in a socketplate H5 on the apex end of the base-frame, asshown. It will be noticed that by arranging the hoist in this manner itcan be conveniently used in buildings forty or fifty or more feet wide,thereby permitting the boom to be of greater length and to be swungtothe scaiold on either side of the building. \Vhen v great strength isrequired of the hoist, three or more diagonal brace-bars B5 andgoosenecks E5 may be employed and a plate similar to that shown in Fig.4, with three or more apertured ears used.

My improved hoist can be readily taken apart and takes up but asma-llamount of room when packed.

The modified form of hoist shown in Fig. 8 would not do in a narrowbuilding, as the back braces would take up too much room and be in theway of the masons scatfold and prevent the use of wheelbarrows thereon.It avoids the necessity of employing bod-carriers and also the necessityof cutting out joists for the construction ot the elevator towers ormachines now in common use.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

l. rlhe combination, with the main frame A, the plates D Il, detachahlysecured to the beams a and a, of the frame A, the plate D, formed with aforwardly-projecting member d and apertured ears d3 at its rear end, ofthe boom-carrying mast C, journaled at its lower end in the plate Il andat its upper end in the member d', of the plate D, arearwardly-extending horizontal brace-beam G, detachably secured at itsfront end to the plate I-I, and an inclined brace-beam F, secured atitslower end to the outer end of the beam G, and provided at its upper endwith a goose-neck member E, pivoted between the ears d of the plate D,all arranged substantially as and for the purpose described.

2. The combination of the main frame A, the diagonal brace-beam F, thehorizontal 'brace-beam G, the mast C, and the boom I, ar-

ranged substantially as shown, of the anchorframe J, carrying a windlassK, and an anchor-ropc adapted to be secured to the rear end of the beamsF and G, substantially as and for the purpose described.

3. The combination, with the main frame A and the brace-beams F and G,connected therewith, substantially as shown, of the mast C, theboom I,formed of outwardly-diverging members, the hoist-rope L, theguide-sheaves on the boom I and mast C, and the tag-rope l", allarranged substantially as shown and described.

. JOHN COSGROVE.

lVitnesses:

F. W. Joiner., T. R. TILLE'r'r.

IOO

